ABSTRACT
Introduction and Aims: in today's world hazard and related risks are vary and most severity of them are so high that it is practically impossible to compensate for the resulting consequences. Risk assessment is a logical method to evaluate the hazards that discus to detect hazards and their potential impact on people, materials, equipment and the environment. The aim of this study was to identify hazards and assess the risks of different units of the Jahantormoz Company using the Frank - Morgan method
Methods: this Descriptive study was conducted at 12 unit of Jahantormoz manufacture in 2013. In this study, hazards and exist controls was identified by using hazard detection and control checklist then final comparison was conducted by calculating the total investment at risk and the overall risk
Results: according to surveys conducted the highest and lowest hazard scores respectively were obtained from mix [215] and Central warehouse [87] units and highest and lowest control scores respectively were obtained from Perform [234] and Central warehouse [164] units. Also, highest and lowest Risk index respectively were obtained from Cutting unit [88] and central warehouse [-10] units. Finally, Packaging was dedicated highest overall risk index
Conclusion: considering that the packaging unit has the highest overall risk index, this unit has priority in control and required controlling measures should be performed
ABSTRACT
Dust can be produced by almost all production processes in Portland cement factory. Dust exposure potentially can affect respiratory function. But evidence for respiratory effect of cement dust exposure has not been conclusive. In this study we assessed effect of cement dust exposure on respiratory function in a cement production factory. A respiratory symptoms questionnaire was completed and pulmonary function tests were carried out on 94 exposed and 54 non exposed workers at a cement factory in the east of Iran. Additionally, respirable dust level was determined by the gravimetric method. X-ray fluorescence [XRF] technique was performed to determine the silica phases and the SiO[2] contents of the bulk samples. The arithmetic means [AM] of personal respirable dust were 30.18 mg/m[3] in the crushing, 27 mg/m[3] in the packing, 5.4 mg/m[3] in the cement mill, 5.9 mg/m[3] in the kiln and 5.48 mg/m[3] in the maintenance that were higher than threshold limit value [TLV] of the American Conference of Governmental Industrial Hygienists [ACGIH] which is 5 mg/m[3]. This value in the unexposed group was 0.93 mg/m[3]. In this study cough, sputum, wheezing and dyspnea were more prevalent among exposed subjects. Exposed workers compared to the unexposed group showed significant reduction in Forced Expiratory Volume in one second [FEV[1]], Forced Vital Capacity [FVC], and Forced Expiratory Flow between 25% and 75% of the FVC [FEF[25-75%]] [P<0.05]. It can be concluded that in our study there was close and direct association between cement dust exposure and functional impairment among the cement factory workers